My sympathy goes out to you and yours. What a horrible way to loose your dog in a Community Dog Park! We own a
Korean Jindo and it can never go to a dog park because of its behavior. In fact I walk it every night after dark. I can not understand what really happened. Hell it was a dog park! Maybe that Officer was trying to impress his Wife and yes I agree he was the dangerous one, not your dog.
Sorry for your loss and hopefully some resolve will involve that Police Officer being charged.